Changes to Create a batch (Phase 1)

removed the optional property message from the response with the 400 status

removed the optional property message from the response with the 422 status

removed the optional property message from the response with the 429 status

removed the optional property message from the response with the 500 status

added the new optional request property taskIdentifiers

added the optional property error to the response with the 400 status

added the optional property error to the response with the 422 status

added the optional property error to the response with the 429 status

added the optional property error to the response with the 500 status

endpoint added